DC Audio XL SPL 15" Subwoofer
Key features
- Subwoofer size: 15.0 inches
- RMS power per subwoofer: 2200 W
- Voice-coil options: D0.7, D1, D1.4, D2, D4
- Mounting depth: 10.25 inches
- Mounting cutout diameter: 14 inches
- Voice-coil diameter: 3 inches
DC Audio XL SPL 15" Subwoofer - Dual 0.7 Ohm is backordered and will ship as soon as it is back in stock.
Description
Description
The DC Audio XL SPL 15" Subwoofer is a hand-built USA-made 15-inch driver from the XL SPL line (M4 SPL), engineered for extreme SPL in high-power car audio systems. It’s available in 10, 12, 15, and 18-inch sizes and handles up to 2200W RMS (4400W peak) with a 7–14 day build time.
- Power Handling (RMS/Peak): 2200W RMS / 4400W peak — supports high-output bass performance when paired with a suitable amplifier and enclosure.
- 8-Layer Flat-Wound Hi-Temp Aluminum Voice Coil: 3.0" VC diameter for improved heat dissipation and sustained high-power operation under heavy bass duty.
- Extremely rigid cone & Multilayered foam surround: Non-pressed paper cone and multilayer polymer surround minimize cone flex for controlled excursion and better linearity.
- Cast Aluminum Frame & Hardware: Black cast aluminum frame with rubber mounting gasket, rubber motor boot, and chrome spring-loaded push terminals for durability and reliable installs.
- FEA-Analyzed Motor Assembly: Fully CNC-machined motor assembly optimized via finite element analysis to deliver consistent magnetic performance under load.
- Impedance Options: Dual ohm options (.7/1/1.4/2/4) to match a wide range of amplifiers and wiring configurations.
- 15" Mechanical & Electrical Specs: Mounting Depth 10.25"; Mounting Hole Diameter 14"; Outside Diameter 15.7"; VC Diameter 3.0"; Displacement 0.23 ft³; Sd 791 cm; Vas 66.02 L; Xmax 26 mm; Re 3.98 Ω; Le 3.5 mH; Qts 0.65; Ref SPL @ 1W 87.3 dB.
- Enclosure Recommendations: Sealed box 2.0 ft³; Ported box 3.0 ft³ for the 15" version.
In a real car build, this driver excels in SPL-focused setups where a large, well-tuned enclosure and high-current amplification are available. The combination of sizable Sd and Vas, high Xmax, and robust construction makes it a strong choice for competition-grade bass where accuracy and output are both valued.
| 10" | 12" | 15" | 18" | |
|---|---|---|---|---|
| Mounting Depth | 8.25" | 9" | 10.25" | 11.25" |
| Mounting Hole Diameter | 9.35" | 11" | 14" | 16.75" |
| Outside Driver Diameter | 11" | 12.5" | 15.7" | 18.5" |
| VC Diameter | 3.0" | 3.0" | 3.0" | 3.0" |
| Displacement | .18 ft | .19 ft | .23 ft | .26ft |
| Power Handling rms/peak | 2200/4400 | 2200/4400 | 2200/4400 | 2200/4400 |
| Ohm Options (dual) | .7/1/1.4/2/4 | .7/1/1.4/2/4 | .7/1/1.4/2/4 | .7/1/1.4/2/4 |
| Sd | 324 cm | 494 cm | 791 cm | 1159 cm |
| Vas | 12.42 L | 25.77 L | 66.02 L | 144.36 L |
| Cms | 0.085 Mm/n | 0.08 Mm/n | 0.07 Mm/n | 0.07 Mm/n |
| Mms | 171.77 g | 213.7 g | 306.7 g | 346.07 g |
| Fs | 41.7Hz | 38.5 Hz | 34.3 Hz | 32.3 Hz |
| Bl | 22.73 N/A | 22.73 N/A | 22.73 N/A | 22.73 N/A |
| Re | 3.98 Ohm | 3.98 Ohm | 3.98 Ohm | 3.98 Ohm |
| Le | 5.2 mH | 5.2 mH | 3.5 mH | 3.5 mH |
| Qms | 11.24 |
12.92 |
8.18 | 8.32 |
| Qes | 0.35 |
0.403 |
0.706 | 0.718 |
| Qts |
0.34 | 0.391 |
0.65 | 0.661 |
| Xmax | 26mm | 26mm | 26mm | 26mm |
| Ref SPL @1 watt | 85.9 db | 87.5 db | 87.3 db | 90.4 db |
| Suggest Sealed Box | .75 ft | 1.0 ft | 2.0 ft | 3.5 ft |
| Suggested Ported Box | 1.0 ft | 1.50 ft | 3.0 ft | 5.5 ft |
Recommended Monoblock Amplifiers
Power-matched options for one subwoofer or one complete loaded enclosure. We aim to include same-brand choices when their ratings qualify.
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Suggestions use 75–125% of the subwoofer’s RMS rating at the wiring load shown. Check wiring, enclosure needs, electrical capacity and installation space. Set gain and filters correctly to avoid overpowering the subwoofer. Buying more than one subwoofer changes the match.
